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SEWING MACHINE. No. 571,318. Patented Nov. 10, 1896.

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J.F.HARDY. SEWING MACHINE.

No. 571 31 8. Patent d Nov. 10, 1896..

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JAMES F. HARDY, OF NEV YORK, N. Y.

SEWING- MACHINE;

SPECIFICATION forming partof Letters Patent No. 571,318, dated November i 10, 1896.

Application filed August 26,1895. Serial No. 560,495. (No model.)

To a whom it may concern:

Be it known that I, JAMES F. HARDY, of the city and county of New York, in the State of New York, have invented a new and useful Improvement in Sewing-Machines, of which the following is a specification.

My invention relates to an improvement in sewing-machines, and more particularly in the mechanism for regulating the length of stitch at pleasure.

For the purpose of illustrating my invention I have shown only such parts of a machine as are necessary to make clear the location.

and operation of the stitch-regulating mechanism.

In the accompanying drawings, Figure 1 is a view in end elevation of the feed-bar and its support, showing the table in vertical section. Fig. 2 is a top plan view of the feedbar and stitch regulating mechanism and their support, the table being removed. Fig. 8 is a view in elevation of the stitch-regulatin g mechanism and its support, looking in the opposite direction from Fig. 1. Fig. at is a front View of a portion of the base of the machine, showing the feed-bar, the stitch-regulating mechanism, and the actuating-shaft in position relative thereto; and Fig. 5 is a View in detail, partly in horizontal section and partly in plan, of a portion of the stitch-regulating mechanism.

The end of the base of the machine which forms a support for the feed-bar, the stitchregulating mechanism, and the actuatingshaft is denoted by A. It is surmounted, as

usual, by a table a, and the shaft for actuating the feed-bar is denoted by B and has its end mounted in the support A. The shaft B outside of the support A is provided with an eccentric I), which works between the two jaws c and c of a bar 0, pivoted at o and having fixed to vibrate therewith an arm 0 to which the feed-dog D is secured in vertical adjustment by means of a set-screw d. The pivotal connection of the bar 0 on the pivot c is such as to permit the bar 0 to play lon- .gitudinally in order to impart to the feeddog D the required movement in the direction of the line of feed, and the eccentric b on the actuatingshaft B serves to impart to the bar G, and hence to the feed dog D, the

requiredreciprocatin g vertical movement to throw the feed-dog into and out of engagement with the material to be fed.

The jaw 0 extends forwardly and is provided with an elongated slot 0 for the reception of a bolt E, provided with a. clamp-nut c, which bolt E extends through an opening a in the support A and carries on its i11- wardly-projecting end a channel-bar e, depending therefrom and fixed thereto. (See Fig. 3.) The elongated slot 0 is for the purpose ofallowing the bolt E to be adjusted toi ward and away from the pivotal connection 0 of the bar 0.

The shaft B is provided inwardly of the support A with an eccentric b, whichworks betweenthe two jaws f and f of a vibrating arm F, pivoted to the supportA at f The arm F has a projection f on its front side, in which there is a verticallyelongated slot f for the reception of a bolt 9, provided witha head g, fixed thereto, and having an operating handle or tail g for turning the bolt. A bifurcated link G embraces the slotted extension f on the vibrating arm F and receives through its branches the bolt g, the latter being provided with a screw-threaded end 9 which registers with a screw-threaded socket in one of the branches of the bifurcated link G, as clearly shown in Fig.5, for the purpose of drawing the branches together upon opposite sides of the slotted extension f when the bolt g is turned in one direction to clamp the link G firmly to the slotted extension f and when the bolt 9 is turned in the opposite direction the link G may be adjusted up and down along the slot f in the extension f The link G is provided with a stud g adapted to enter between the sides of the channel-bar 6', carried by the bolt E, hereinbefore referred to, so as to impart to said channel-bar, and hence to the bar 0, to which the bolt E is clamped, the desired reciprocating movement of the bar 0, and hence of the feed-dog, in the direction of the line of feed. The link G is further provided with a combined handle and pointer 9 which extends forwardly in proximity to the edge of a depending plate I-I, provided with ascale to indicate the number of stitches to an inch when the link G is adjusted to any one of the several subdivisions of the scale.

It will be readily seen that as the link is moved upwardly along the scale it will be moved farther from the center of vibration of the arm F, and hence the throw imparted to the channel-bar e, and hence to the feed-dog D, will be increased, while the opposite effect will take place as the link G is lowered. The adjustment may be made with great facility by simply taking the pointer g between the thumb and finger, then loosening the bolt 9 and sliding the link G into position to bring the pointer opposite the subdivision in the scale which will give the desired number of stitches per inch, and then tightening the bolt g to hold the link in position.

The mechanism for lengthening and shortening the stitch is snugly housed by the scaleplate H, and its operating-handles are at the front, where they may be conveniently manipulated by the operator. The parts are few and not liable to get out of order.

hat I claim is- 1. The combination with the actuatingshaft, the feed-dog support, the vibrating arm and the eccentrics on the actuating-shaft for actuatingthe feed-dog support and the vibrating arm, of a bolt extending laterally from the feed-dog support, means for ad j usting the said bolt toward and away from the pivotal connection of the feed-dog support, a channel-bar fixed to said bolt and depending therefrom, a link having a vertically-sliding connection with said channel-bar, means for connecting the link in different vertical a(l justments with respect to the vibrating arm,

a pointer on the link and a scale in proximity to said pointer, substantially as set forth.

2. The combination with the actuatingshaft, the feed-dog support, the vibrating arm and the eccentrics on the actuating-shaft for actuating the feed-dog support and the vibrating arm, of a slotted extension at the front of the said vibrating arm, a bolt extending laterally from the feed-dog support, a channel-bar fixed to said bolt and depending therefrom, a link having a vertically-sliding engagement with the channel-bar and the slotted extension and means for clamping the link to the slotted extension in the desired vertical adjustment, substantially as set forth.

3. The combination with the actuatingshaft, the feed-dog support, the vibrating arm, and the eccentrics on the actuating-shaft for actuating the feed-dog support and the vibrating arm, of an extension at the front of the said vibrating arm having a verticallyelongated slot therein, a bolt extending laterally from the feed-dog support, a channelbar fixed to said bolt and depending therefrom, a bifurcated link embracing said slotted extension, a stud on the link engaged with the channel-bar and a locking-bolt passing through the branches of the link and through the slot in the slotted extension for locking the link to the vibrating arm in the desired vertical adjustment, substantially as set forth.

JAMES F. HARDY. lVitnesses:

IRENE B. DECKER, FREDK. IIAYNEs. 

